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giz port, restructuring

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git-svn-id: file:///home/notaz/opt/svn/PicoDrive@257 be3aeb3a-fb24-0410-a615-afba39da0efa
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notaz 2007-09-22 22:53:18 +00:00
parent c9077ab4b9
commit ea8c405fa7
30 changed files with 1706 additions and 970 deletions
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112
platform/gizmondo/asm_utils.s Normal file
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@ vim:filetype=armasm
.global vidCpy8to16_40 @ void *dest, void *src, short *pal, int lines
vidCpy8to16_40:
stmfd sp!, {r4-r9,lr}
mov r3, r3, lsr #1
orr r3, r3, r3, lsl #8
add r1, r1, #8
orr r3, r3, #(320/8-1)<<24
@ even lines
vcloop_40_aligned:
ldr r12, [r1], #4
ldr r7, [r1], #4
and r4, lr, r12, lsl #1
ldrh r4, [r2, r4]
and r5, lr, r12, lsr #7
ldrh r5, [r2, r5]
and r6, lr, r12, lsr #15
ldrh r6, [r2, r6]
orr r4, r4, r5, lsl #16
and r5, lr, r12, lsr #23
ldrh r5, [r2, r5]
and r8, lr, r7, lsl #1
ldrh r8, [r2, r8]
orr r5, r6, r5, lsl #16
and r6, lr, r7, lsr #7
ldrh r6, [r2, r6]
and r12,lr, r7, lsr #15
ldrh r12,[r2, r12]
and r9, lr, r7, lsr #23
ldrh r9, [r2, r9]
orr r8, r8, r6, lsl #16
subs r3, r3, #1<<24
orr r12,r12, r9, lsl #16
stmia r0!, {r4,r5,r8,r12}
bpl vcloop_40_aligned
add r1, r1, #336 @ skip a line and 1 col
add r0, r0, #320*2+2*2
add r3, r3, #(320/8)<<24
sub r3, r3, #1
tst r3, #0xff
bne vcloop_40_aligned
and r4, r3, #0xff00
orr r3, r3, r4, lsr #8
mov r4, r4, lsr #7
sub r4, r4, #1
mov r5, #320*2
add r5, r5, #2
mul r4, r5, r4
sub r0, r0, r4
mov r5, #328
mul r4, r5, r4
sub r1, r1, r4
vcloop_40_unaligned:
ldr r12, [r1], #4
ldr r7, [r1], #4
and r4, lr, r12, lsl #1
ldrh r4, [r2, r4]
and r5, lr, r12, lsr #7
ldrh r5, [r2, r5]
strh r4, [r0]!
and r6, lr, r12, lsr #15
ldrh r6, [r2, r6]
and r4, lr, r12, lsr #23
ldrh r4, [r2, r4]
orr r5, r5, r6, lsl #16
and r8, lr, r7, lsl #1
ldrh r8, [r2, r8]
and r6, lr, r7, lsr #7
ldrh r6, [r2, r6]
orr r8, r4, r8, lsl #16
and r12,lr, r7, lsr #15
ldrh r12,[r2, r12]
and r4, lr, r7, lsr #23
ldrh r4, [r2, r6]
orr r12,r6, r12,lsl #16
subs r3, r3, #1
stmia r0!, {r5,r8,r12}
strh r4, [r0]!
bne vcloop_40_unaligned
add r1, r1, #336 @ skip a line and 1 col
add r0, r0, #320*2+2*2
add r3, r3, #(320/8)<<24
sub r3, r3, #1
tst r3, #0xff
bne vcloop_40_unaligned
ldmfd sp!, {r4-r9,lr}
bx lr